<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script>
			var s="http://www.itheima.com/你好/ 1.html";
			document.write(encodeURI(s)+"<hr/>")
			
			var s_="http://www.itheima.com/%E4%BD%A0%E5%A5%BD/%201.html";
			document.write(decodeURI(s_))
			
			var i="9.9";
			//alert(parseInt(i));//9
			//alert(parseFloat(i));//9.9
			
			i="9.9超市"
			//alert(parseInt(i));//9
			//alert(parseFloat(i));//9.9
			
			i="你好9";
			//alert(parseInt(i));//
			//alert(parseFloat(i));//
			
			s="alert('hello')";
			eval(s);
		</script>
	</head>
	<body>
	</body>
</html>
